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Volume 28 Issue 1
 
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Article Navigation >  Journal of Unmanned Undersea Systems  > 2020  >  28(1): 057-66
YOU Qian-liang, WEI Hai-feng, CHANG Xu, TIAN Hui-feng. Flux-Weakening Control of PMSM Based on Three-Degree-of-Freedom Dynamic Internal Model Decoupling[J]. Journal of Unmanned Undersea Systems, 2020, 28(1): 057-66. doi: 10.11993/j.issn.2096-3920.2020.01.009
Citation: YOU Qian-liang, WEI Hai-feng, CHANG Xu, TIAN Hui-feng. Flux-Weakening Control of PMSM Based on Three-Degree-of-Freedom Dynamic Internal Model Decoupling[J]. Journal of Unmanned Undersea Systems, 2020, 28(1): 057-66. doi: 10.11993/j.issn.2096-3920.2020.01.009
shu

Flux-Weakening Control of PMSM Based on Three-Degree-of-Freedom Dynamic Internal Model Decoupling

doi: 10.11993/j.issn.2096-3920.2020.01.009
  • 1.

    Jiangsu University of Science and Technology Zhenjiang 212003 China

  • 2.

    SuZhou Dongda Goldenpoint Technology Co., Ltd, Zhangjiagang 215000, China

  • Received Date: 2019-07-10
  • Rev Recd Date: 2019-08-14
  • Publish Date: 2020-02-29
    Abstract
  • Aiming at the problem that the dynamic performance of permanent magnet synchronous motor(PMSM) of undersea vehicle propulsion system in flux-weakening operation is unsatisfactory, the influence of direct-quadrature axis current regulator on the dynamic performance of PMSM is studied based on the PMSM flux-weakening theory, and a flux-weakening control strategy of PMSM based on three-degree-of-freedom dynamic internal model decoupling is proposed. Considering the fact that traditional internal model decoupling cannot take the decoupling effect, response speed and steady-state error into account at the same time, current regulation factors are introduced to modify the decoupling controller. On this basis, to the problem that the direction of quadrature axis current regulation is opposite to the expected direction of the system when the output torque leaps, the information of quadrature axis current is added into the current regulation factors and the fuzzy controller is used to optimize the current regulation factors in real time. Simulation and experimental results show that the proposed strategy can synthetically solve the problems of unsatisfactory performance of quadrature axis current regulator and serious current coupling in flux-weakening operation, improve the dynamic performance of PMSM, and has the triple functions of anti-saturation, current decoupling and flux-weakening control.

     

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